The Brain and Spinal Cord Contain About ________ Percent of the Body's

question 105

Multiple Choice

The brain and spinal cord contain about ________ percent of the body's neurons.

• A) 40
• B) 65
• C) 15
• D) 90

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Definitions:

Rule of 70

A rule that estimates the number of years required to double an investment or population at a fixed annual growth rate, by dividing 70 by the percentage growth rate.

Annual Interest

The amount of interest earned or paid over a one-year period on investments, loans, or savings.

Rule of 70

A formula used to estimate the number of years required for an investment or population to double, given a fixed annual growth rate.

Interest Rate

The sum charged by a lender, as a fraction of the principal, for the privilege of accessing assets by a borrower.